Annotation of src/usr.bin/newsyslog/newsyslog.c, Revision 1.72
1.72 ! millert 1: /* $OpenBSD: newsyslog.c,v 1.71 2003/06/10 22:58:45 millert Exp $ */
1.10 downsj 2:
3: /*
1.62 millert 4: * Copyright (c) 1999, 2002, 2003 Todd C. Miller <Todd.Miller@courtesan.com>
1.30 millert 5: *
1.66 millert 6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.72 ! millert 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: * Sponsored in part by the Defense Advanced Research Projects
! 18: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 19: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
1.30 millert 20: */
21:
22: /*
1.10 downsj 23: * Copyright (c) 1997, Jason Downs. All rights reserved.
24: *
25: * Redistribution and use in source and binary forms, with or without
26: * modification, are permitted provided that the following conditions
27: * are met:
28: * 1. Redistributions of source code must retain the above copyright
29: * notice, this list of conditions and the following disclaimer.
30: * 2. Redistributions in binary form must reproduce the above copyright
31: * notice, this list of conditions and the following disclaimer in the
32: * documentation and/or other materials provided with the distribution.
33: *
34: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
35: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
36: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
38: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
39: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
40: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
41: * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: * SUCH DAMAGE.
45: */
1.3 deraadt 46:
1.1 deraadt 47: /*
48: * This file contains changes from the Open Software Foundation.
49: */
50:
51: /*
1.50 millert 52: * Copyright 1988, 1989 by the Massachusetts Institute of Technology
53: *
54: * Permission to use, copy, modify, and distribute this software
55: * and its documentation for any purpose and without fee is
56: * hereby granted, provided that the above copyright notice
57: * appear in all copies and that both that copyright notice and
58: * this permission notice appear in supporting documentation,
59: * and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
60: * used in advertising or publicity pertaining to distribution
61: * of the software without specific, written prior permission.
62: * M.I.T. and the M.I.T. S.I.P.B. make no representations about
63: * the suitability of this software for any purpose. It is
64: * provided "as is" without express or implied warranty.
65: */
1.1 deraadt 66:
67: /*
68: * newsyslog - roll over selected logs at the appropriate time,
1.65 millert 69: * keeping the specified number of backup files around.
1.1 deraadt 70: *
71: */
72:
73: #ifndef lint
1.72 ! millert 74: static const char rcsid[] = "$OpenBSD: newsyslog.c,v 1.71 2003/06/10 22:58:45 millert Exp $";
1.1 deraadt 75: #endif /* not lint */
76:
77: #ifndef CONF
1.47 millert 78: #define CONF "/etc/newsyslog.conf" /* Configuration file */
1.1 deraadt 79: #endif
80: #ifndef PIDFILE
81: #define PIDFILE "/etc/syslog.pid"
82: #endif
83: #ifndef COMPRESS
1.47 millert 84: #define COMPRESS "/usr/bin/compress" /* File compression program */
1.1 deraadt 85: #endif
86: #ifndef COMPRESS_POSTFIX
87: #define COMPRESS_POSTFIX ".Z"
88: #endif
1.10 downsj 89: #ifndef STATS_DIR
90: #define STATS_DIR "/etc"
91: #endif
92: #ifndef SENDMAIL
93: #define SENDMAIL "/usr/lib/sendmail"
94: #endif
1.1 deraadt 95:
1.48 millert 96: #include <sys/param.h>
97: #include <sys/stat.h>
1.9 downsj 98: #include <sys/time.h>
99: #include <sys/wait.h>
1.48 millert 100:
1.1 deraadt 101: #include <ctype.h>
1.48 millert 102: #include <err.h>
103: #include <errno.h>
1.9 downsj 104: #include <fcntl.h>
1.1 deraadt 105: #include <grp.h>
1.47 millert 106: #include <limits.h>
1.48 millert 107: #include <pwd.h>
108: #include <signal.h>
109: #include <stdio.h>
110: #include <stdlib.h>
111: #include <string.h>
1.68 millert 112: #include <time.h>
1.9 downsj 113: #include <unistd.h>
1.1 deraadt 114:
1.26 millert 115: #define CE_ROTATED 0x01 /* Log file has been rotated */
1.65 millert 116: #define CE_COMPACT 0x02 /* Compact the archived log files */
1.26 millert 117: #define CE_BINARY 0x04 /* Logfile is in binary, don't add */
1.10 downsj 118: /* status messages */
1.65 millert 119: #define CE_MONITOR 0x08 /* Monitor for changes */
1.45 wcobb 120: #define CE_FOLLOW 0x10 /* Follow symbolic links */
1.65 millert 121: #define CE_TRIMAT 0x20 /* Trim at a specific time */
1.35 deraadt 122:
1.49 millert 123: #define MIN_PID 4 /* Don't touch pids lower than this */
1.58 millert 124: #define MIN_SIZE 256 /* Don't rotate if smaller (in bytes) */
1.49 millert 125:
1.50 millert 126: #define DPRINTF(x) do { if (verbose) printf x ; } while (0)
127:
1.1 deraadt 128: struct conf_entry {
1.35 deraadt 129: char *log; /* Name of the log */
1.51 millert 130: char *logbase; /* Basename of the log */
131: char *backdir; /* Directory in which to store backups */
1.35 deraadt 132: uid_t uid; /* Owner of log */
133: gid_t gid; /* Group of log */
134: int numlogs; /* Number of logs to keep */
1.58 millert 135: off_t size; /* Size cutoff to trigger trimming the log */
1.35 deraadt 136: int hours; /* Hours between log trimming */
1.63 millert 137: time_t trim_at; /* Specific time at which to do trimming */
1.35 deraadt 138: int permissions; /* File permissions on the log */
1.30 millert 139: int signal; /* Signal to send (defaults to SIGHUP) */
1.35 deraadt 140: int flags; /* Flags (CE_COMPACT & CE_BINARY) */
1.10 downsj 141: char *whom; /* Whom to notify if logfile changes */
1.65 millert 142: char *pidfile; /* Path to file containing pid to signal */
1.30 millert 143: char *runcmd; /* Command to run instead of sending a signal */
1.35 deraadt 144: struct conf_entry *next; /* Linked list pointer */
1.1 deraadt 145: };
146:
1.30 millert 147: struct pidinfo {
148: char *file;
149: int signal;
150: };
151:
1.52 millert 152: int verbose = 0; /* Print out what's going on */
153: int needroot = 1; /* Root privs are necessary */
154: int noaction = 0; /* Don't do anything, just show it */
1.33 millert 155: int monitormode = 0; /* Don't do monitoring by default */
1.52 millert 156: int force = 0; /* Force the logs to be rotated */
157: char *conf = CONF; /* Configuration file to use */
158: time_t timenow;
1.65 millert 159: char hostname[MAXHOSTNAMELEN]; /* Hostname */
1.52 millert 160: char *daytime; /* timenow in human readable form */
1.65 millert 161: char *arcdir; /* Dir to put archives in (if it exists) */
1.1 deraadt 162:
1.43 millert 163: void do_entry(struct conf_entry *);
1.48 millert 164: void parse_args(int, char **);
1.43 millert 165: void usage(void);
166: struct conf_entry *parse_file(int *);
1.60 millert 167: char *missing_field(char *, char *, int);
1.51 millert 168: void dotrim(struct conf_entry *);
1.43 millert 169: int log_trim(char *);
1.51 millert 170: void compress_log(struct conf_entry *);
1.58 millert 171: off_t sizefile(char *);
1.51 millert 172: int age_old_log(struct conf_entry *);
1.43 millert 173: char *sob(char *);
174: char *son(char *);
175: int isnumberstr(char *);
1.61 millert 176: int domonitor(struct conf_entry *);
1.43 millert 177: FILE *openmail(void);
178: void child_killer(int);
179: void run_command(char *);
180: void send_signal(char *, int);
1.57 millert 181: char *lstat_log(char *, size_t, int);
182: int stat_suffix(char *, size_t, char *, struct stat *, int (*)());
1.63 millert 183: time_t parse8601(char *);
184: time_t parseDWM(char *);
1.1 deraadt 185:
1.25 millert 186: int
1.48 millert 187: main(int argc, char **argv)
1.1 deraadt 188: {
1.53 millert 189: struct conf_entry *p, *q, *x, *y;
1.30 millert 190: struct pidinfo *pidlist, *pl;
1.53 millert 191: char **av;
1.28 millert 192: int status, listlen;
1.35 deraadt 193:
1.48 millert 194: parse_args(argc, argv);
1.53 millert 195: argc -= optind;
196: argv += optind;
197:
1.35 deraadt 198: if (needroot && getuid() && geteuid())
1.11 downsj 199: errx(1, "You must be root.");
1.53 millert 200:
201: p = parse_file(&listlen);
202: if (argc > 0) {
203: /* Only rotate specified files. */
204: x = y = NULL;
205: listlen = 0;
206: for (av = argv; *av; av++) {
207: for (q = p; q; q = q->next)
208: if (strcmp(*av, q->log) == 0) {
209: if (x == NULL)
210: x = y = q;
211: else {
212: y->next = q;
213: y = q;
214: }
215: listlen++;
216: break;
217: }
218: if (q == NULL)
1.60 millert 219: warnx("%s: %s not found", conf, *av);
1.53 millert 220: }
221: if (x == NULL)
1.60 millert 222: errx(1, "%s: no specified log files", conf);
1.53 millert 223: y->next = NULL;
224: p = x;
225: }
1.26 millert 226:
1.46 aaron 227: pidlist = (struct pidinfo *)calloc(listlen + 1, sizeof(struct pidinfo));
1.30 millert 228: if (pidlist == NULL)
1.28 millert 229: err(1, "calloc");
230:
1.53 millert 231: signal(SIGCHLD, child_killer);
232:
1.26 millert 233: /* Step 1, rotate all log files */
1.53 millert 234: for (q = p; q; q = q->next)
1.35 deraadt 235: do_entry(q);
1.26 millert 236:
1.28 millert 237: /* Step 2, make a list of unique pid files */
1.30 millert 238: for (q = p, pl = pidlist; q; ) {
1.28 millert 239: if (q->flags & CE_ROTATED) {
1.30 millert 240: struct pidinfo *pltmp;
1.28 millert 241:
1.30 millert 242: for (pltmp = pidlist; pltmp < pl; pltmp++) {
1.55 millert 243: if ((q->pidfile &&
244: strcmp(pltmp->file, q->pidfile) == 0 &&
245: pltmp->signal == q->signal) ||
246: (q->runcmd &&
1.30 millert 247: strcmp(q->runcmd, pltmp->file) == 0))
1.28 millert 248: break;
1.30 millert 249: }
250: if (pltmp == pl) { /* unique entry */
251: if (q->runcmd) {
252: pl->file = q->runcmd;
253: pl->signal = -1;
254: } else {
255: pl->file = q->pidfile;
256: pl->signal = q->signal;
257: }
1.31 millert 258: pl++;
1.30 millert 259: }
1.28 millert 260: }
1.35 deraadt 261: q = q->next;
262: }
1.26 millert 263:
1.30 millert 264: /* Step 3, send a signal or run a command */
265: for (pl = pidlist; pl->file; pl++) {
1.56 millert 266: if (pl->file != NULL) {
267: if (pl->signal == -1)
268: run_command(pl->file);
269: else
270: send_signal(pl->file, pl->signal);
271: }
1.30 millert 272: }
1.28 millert 273: if (!noaction)
274: sleep(5);
275:
276: /* Step 4, compress the log.0 file if configured to do so and free */
1.35 deraadt 277: while (p) {
1.26 millert 278: if ((p->flags & CE_COMPACT) && (p->flags & CE_ROTATED))
1.51 millert 279: compress_log(p);
1.26 millert 280: q = p;
1.35 deraadt 281: p = p->next;
282: free(q);
283: }
1.16 millert 284:
285: /* Wait for children to finish, then exit */
286: while (waitpid(-1, &status, 0) != -1)
287: ;
1.35 deraadt 288: exit(0);
1.1 deraadt 289: }
290:
1.25 millert 291: void
1.48 millert 292: do_entry(struct conf_entry *ent)
1.1 deraadt 293: {
1.58 millert 294: int modtime;
295: off_t size;
1.48 millert 296: struct stat sb;
1.45 wcobb 297:
1.51 millert 298: if (lstat(ent->log, &sb) != 0)
1.50 millert 299: return;
300: if (!S_ISREG(sb.st_mode) &&
301: (!S_ISLNK(sb.st_mode) || !(ent->flags & CE_FOLLOW))) {
302: DPRINTF(("--> not a regular file, skipping\n"));
303: return;
1.45 wcobb 304: }
1.14 millert 305:
1.61 millert 306: DPRINTF(("%s <%d%s%s%s%s>: ", ent->log, ent->numlogs,
1.51 millert 307: (ent->flags & CE_COMPACT) ? "Z" : "",
308: (ent->flags & CE_BINARY) ? "B" : "",
1.61 millert 309: (ent->flags & CE_FOLLOW) ? "F" : "",
310: (ent->flags & CE_MONITOR) && monitormode ? "M" : ""));
1.50 millert 311:
1.35 deraadt 312: size = sizefile(ent->log);
1.51 millert 313: modtime = age_old_log(ent);
1.35 deraadt 314: if (size < 0) {
1.50 millert 315: DPRINTF(("does not exist.\n"));
1.35 deraadt 316: } else {
1.63 millert 317: if (ent->flags & CE_TRIMAT && !force) {
318: if (timenow < ent->trim_at ||
319: difftime(timenow, ent->trim_at) >= 60 * 60) {
320: DPRINTF(("--> will trim at %s",
321: ctime(&ent->trim_at)));
322: return;
1.65 millert 323: } else if (ent->hours <= 0) {
1.63 millert 324: DPRINTF(("--> time is up\n"));
325: }
326: }
1.50 millert 327: if (ent->size > 0)
1.58 millert 328: DPRINTF(("size (KB): %.2f [%d] ", size / 1024.0,
329: (int)(ent->size / 1024)));
1.50 millert 330: if (ent->hours > 0)
331: DPRINTF(("age (hr): %d [%d] ", modtime, ent->hours));
1.61 millert 332: if (monitormode && (ent->flags & CE_MONITOR) && domonitor(ent))
333: DPRINTF(("--> monitored\n"));
334: else if (!monitormode &&
335: (force || (ent->size > 0 && size >= ent->size) ||
1.63 millert 336: (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) ||
1.49 millert 337: (ent->hours > 0 && (modtime >= ent->hours || modtime < 0)
338: && ((ent->flags & CE_BINARY) || size >= MIN_SIZE)))) {
1.50 millert 339: DPRINTF(("--> trimming log....\n"));
1.19 kstailey 340: if (noaction && !verbose)
1.50 millert 341: printf("%s <%d%s%s%s>\n", ent->log,
342: ent->numlogs,
343: (ent->flags & CE_COMPACT) ? "Z" : "",
344: (ent->flags & CE_BINARY) ? "B" : "",
345: (ent->flags & CE_FOLLOW) ? "F" : "");
1.51 millert 346: dotrim(ent);
1.26 millert 347: ent->flags |= CE_ROTATED;
1.50 millert 348: } else
349: DPRINTF(("--> skipping\n"));
1.35 deraadt 350: }
1.1 deraadt 351: }
352:
1.30 millert 353: /* Run the specified command */
354: void
1.48 millert 355: run_command(char *cmd)
1.30 millert 356: {
357: if (noaction)
1.55 millert 358: (void)printf("run %s\n", cmd);
1.30 millert 359: else
360: system(cmd);
361: }
362:
363: /* Send a signal to the pid specified by pidfile */
1.26 millert 364: void
1.48 millert 365: send_signal(char *pidfile, int signal)
1.26 millert 366: {
1.48 millert 367: pid_t pid;
368: FILE *f;
369: char line[BUFSIZ], *ep, *err;
1.69 millert 370: long lval;
1.26 millert 371:
1.35 deraadt 372: if ((f = fopen(pidfile, "r")) == NULL) {
1.26 millert 373: warn("can't open %s", pidfile);
374: return;
375: }
376:
1.48 millert 377: pid = 0;
1.42 millert 378: errno = 0;
379: err = NULL;
1.40 deraadt 380: if (fgets(line, sizeof(line), f)) {
1.69 millert 381: lval = strtol(line, &ep, 10);
1.41 marc 382: if (line[0] == '\0' || (*ep != '\0' && *ep != '\n'))
1.40 deraadt 383: err = "invalid number in";
1.69 millert 384: else if (lval < 0 || (errno == ERANGE && lval == LONG_MAX))
1.40 deraadt 385: err = "out of range number in";
1.69 millert 386: else if (lval == 0)
1.40 deraadt 387: err = "no number in";
1.69 millert 388: else if (lval < MIN_PID)
1.40 deraadt 389: err = "preposterous process number in";
390: else
1.69 millert 391: pid = (pid_t)lval;
1.42 millert 392: } else {
393: if (errno == 0)
394: err = "empty";
395: else
396: err = "error reading";
1.40 deraadt 397: }
1.26 millert 398: (void)fclose(f);
399:
1.40 deraadt 400: if (err)
401: warnx("%s pid file: %s", err, pidfile);
402: else if (noaction)
1.44 mpech 403: (void)printf("kill -%s %ld\n", sys_signame[signal], (long)pid);
1.30 millert 404: else if (kill(pid, signal))
405: warnx("warning - could not send SIG%s to daemon",
406: sys_signame[signal]);
1.26 millert 407: }
408:
1.25 millert 409: void
1.48 millert 410: parse_args(int argc, char **argv)
1.1 deraadt 411: {
1.48 millert 412: int ch;
413: char *p;
1.1 deraadt 414:
1.35 deraadt 415: timenow = time(NULL);
416: daytime = ctime(&timenow) + 4;
417: daytime[15] = '\0';
1.1 deraadt 418:
1.35 deraadt 419: /* Let's get our hostname */
420: (void)gethostname(hostname, sizeof(hostname));
1.1 deraadt 421:
422: /* Truncate domain */
1.48 millert 423: if ((p = strchr(hostname, '.')) != NULL)
1.1 deraadt 424: *p = '\0';
425:
1.52 millert 426: while ((ch = getopt(argc, argv, "Fmnrva:f:")) != -1) {
1.48 millert 427: switch (ch) {
1.51 millert 428: case 'a':
429: arcdir = optarg;
430: break;
1.35 deraadt 431: case 'n':
432: noaction++; /* This implies needroot as off */
433: /* fall through */
434: case 'r':
435: needroot = 0;
436: break;
437: case 'v':
438: verbose++;
439: break;
440: case 'f':
441: conf = optarg;
442: break;
1.10 downsj 443: case 'm':
1.33 millert 444: monitormode++;
1.10 downsj 445: break;
1.52 millert 446: case 'F':
447: force++;
448: break;
1.35 deraadt 449: default:
450: usage();
451: }
452: }
1.52 millert 453: if (monitormode && force)
454: errx(1, "cannot specify both -m and -F flags");
1.9 downsj 455: }
1.1 deraadt 456:
1.25 millert 457: void
1.48 millert 458: usage(void)
1.1 deraadt 459: {
1.25 millert 460: extern const char *__progname;
461:
1.52 millert 462: (void)fprintf(stderr, "usage: %s [-Fmnrv] [-a directory] "
1.53 millert 463: "[-f config_file] [log ...]\n", __progname);
1.14 millert 464: exit(1);
1.1 deraadt 465: }
466:
1.52 millert 467: /*
468: * Parse a configuration file and return a linked list of all the logs
1.1 deraadt 469: * to process
470: */
1.25 millert 471: struct conf_entry *
1.48 millert 472: parse_file(int *nentries)
1.1 deraadt 473: {
1.48 millert 474: FILE *f;
1.63 millert 475: char line[BUFSIZ], *parse, *q, *errline, *group, *tmp, *ep;
1.60 millert 476: int lineno;
1.70 millert 477: long l;
1.35 deraadt 478: struct conf_entry *first = NULL;
479: struct conf_entry *working = NULL;
1.48 millert 480: struct passwd *pwd;
1.35 deraadt 481: struct group *grp;
1.51 millert 482: struct stat sb;
1.1 deraadt 483:
1.35 deraadt 484: if (strcmp(conf, "-") == 0)
485: f = stdin;
1.48 millert 486: else if ((f = fopen(conf, "r")) == NULL)
487: err(1, "can't open %s", conf);
1.11 downsj 488:
1.28 millert 489: *nentries = 0;
1.60 millert 490: for (lineno = 0; fgets(line, sizeof(line), f); lineno++) {
1.48 millert 491: tmp = sob(line);
1.54 millert 492: if (*tmp == '\0' || *tmp == '#')
1.35 deraadt 493: continue;
1.48 millert 494: errline = strdup(tmp);
1.11 downsj 495: if (errline == NULL)
496: err(1, "strdup");
1.28 millert 497: (*nentries)++;
1.35 deraadt 498: if (!first) {
499: working = (struct conf_entry *) malloc(sizeof(struct conf_entry));
1.11 downsj 500: if (working == NULL)
501: err(1, "malloc");
1.35 deraadt 502: first = working;
503: } else {
504: working->next = (struct conf_entry *) malloc(sizeof(struct conf_entry));
1.11 downsj 505: if (working->next == NULL)
506: err(1, "malloc");
1.35 deraadt 507: working = working->next;
508: }
1.1 deraadt 509:
1.60 millert 510: q = parse = missing_field(sob(line), errline, lineno);
1.35 deraadt 511: *(parse = son(line)) = '\0';
512: working->log = strdup(q);
1.11 downsj 513: if (working->log == NULL)
514: err(1, "strdup");
1.1 deraadt 515:
1.51 millert 516: if ((working->logbase = strrchr(working->log, '/')) != NULL)
517: working->logbase++;
518:
1.60 millert 519: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 520: *(parse = son(parse)) = '\0';
1.63 millert 521: if ((group = strchr(q, ':')) != NULL ||
522: (group = strrchr(q, '.')) != NULL) {
1.25 millert 523: *group++ = '\0';
524: if (*q) {
525: if (!(isnumberstr(q))) {
1.48 millert 526: if ((pwd = getpwnam(q)) == NULL)
1.60 millert 527: errx(1, "%s:%d: unknown user: %s",
528: conf, lineno, q);
1.48 millert 529: working->uid = pwd->pw_uid;
1.25 millert 530: } else
531: working->uid = atoi(q);
532: } else
1.50 millert 533: working->uid = (uid_t)-1;
1.25 millert 534:
535: q = group;
536: if (*q) {
537: if (!(isnumberstr(q))) {
538: if ((grp = getgrnam(q)) == NULL)
1.60 millert 539:
540: errx(1, "%s:%d: unknown group: %s",
541: conf, lineno, q);
1.25 millert 542: working->gid = grp->gr_gid;
543: } else
544: working->gid = atoi(q);
545: } else
1.50 millert 546: working->gid = (gid_t)-1;
1.25 millert 547:
1.60 millert 548: q = parse = missing_field(sob(++parse), errline, lineno);
1.25 millert 549: *(parse = son(parse)) = '\0';
1.50 millert 550: } else {
551: working->uid = (uid_t)-1;
552: working->gid = (gid_t)-1;
553: }
1.1 deraadt 554:
1.35 deraadt 555: if (!sscanf(q, "%o", &working->permissions))
1.60 millert 556: errx(1, "%s:%d: bad permissions: %s", conf, lineno, q);
1.1 deraadt 557:
1.60 millert 558: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 559: *(parse = son(parse)) = '\0';
560: if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0)
1.60 millert 561: errx(1, "%s:%d: bad number: %s", conf, lineno, q);
1.1 deraadt 562:
1.60 millert 563: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 564: *(parse = son(parse)) = '\0';
565: if (isdigit(*q))
1.58 millert 566: working->size = atoi(q) * 1024;
1.35 deraadt 567: else
568: working->size = -1;
569:
1.63 millert 570: working->flags = 0;
1.60 millert 571: q = parse = missing_field(sob(++parse), errline, lineno);
1.35 deraadt 572: *(parse = son(parse)) = '\0';
1.70 millert 573: l = strtol(q, &ep, 10);
1.71 millert 574: if (l < 0 || l >= INT_MAX)
1.63 millert 575: errx(1, "%s:%d: interval out of range: %s", conf,
576: lineno, q);
1.70 millert 577: working->hours = (int)l;
1.63 millert 578: switch (*ep) {
579: case '\0':
580: break;
581: case '@':
582: working->trim_at = parse8601(ep + 1);
583: if (working->trim_at == (time_t) - 1)
584: errx(1, "%s:%d: bad time: %s", conf, lineno, q);
585: working->flags |= CE_TRIMAT;
586: break;
587: case '$':
588: working->trim_at = parseDWM(ep + 1);
589: if (working->trim_at == (time_t) - 1)
590: errx(1, "%s:%d: bad time: %s", conf, lineno, q);
591: working->flags |= CE_TRIMAT;
592: break;
593: case '*':
594: if (q == ep)
595: break;
596: /* FALLTHROUGH */
597: default:
598: errx(1, "%s:%d: bad interval/at: %s", conf, lineno, q);
599: break;
600: }
1.1 deraadt 601:
1.35 deraadt 602: q = sob(++parse); /* Optional field */
1.32 millert 603: if (*q == 'Z' || *q == 'z' || *q == 'B' || *q == 'b' ||
604: *q == 'M' || *q == 'm') {
605: *(parse = son(q)) = '\0';
606: while (*q) {
607: switch (*q) {
608: case 'Z':
609: case 'z':
610: working->flags |= CE_COMPACT;
611: break;
612: case 'B':
613: case 'b':
614: working->flags |= CE_BINARY;
615: break;
616: case 'M':
617: case 'm':
618: working->flags |= CE_MONITOR;
1.45 wcobb 619: break;
620: case 'F':
621: case 'f':
622: working->flags |= CE_FOLLOW;
1.32 millert 623: break;
624: default:
1.60 millert 625: errx(1, "%s:%d: illegal flag: `%c'",
626: conf, lineno, *q);
1.32 millert 627: break;
628: }
629: q++;
630: }
631: } else
1.40 deraadt 632: parse--; /* no flags so undo */
1.10 downsj 633:
1.14 millert 634: working->pidfile = PIDFILE;
1.30 millert 635: working->signal = SIGHUP;
636: working->runcmd = NULL;
1.61 millert 637: working->whom = NULL;
1.30 millert 638: for (;;) {
639: q = parse = sob(++parse); /* Optional field */
640: if (q == NULL || *q == '\0')
641: break;
642: if (*q == '/') {
643: *(parse = son(parse)) = '\0';
644: if (strlen(q) >= MAXPATHLEN)
1.60 millert 645: errx(1, "%s:%d: pathname too long: %s",
646: conf, lineno, q);
1.30 millert 647: working->pidfile = strdup(q);
648: if (working->pidfile == NULL)
649: err(1, "strdup");
650: } else if (*q == '"' && (tmp = strchr(q + 1, '"'))) {
651: *(parse = tmp) = '\0';
1.56 millert 652: if (*++q != '\0') {
653: working->runcmd = strdup(q);
654: if (working->runcmd == NULL)
655: err(1, "strdup");
656: }
1.55 millert 657: working->pidfile = NULL;
658: working->signal = -1;
1.30 millert 659: } else if (strncmp(q, "SIG", 3) == 0) {
660: int i;
661:
662: *(parse = son(parse)) = '\0';
663: for (i = 1; i < NSIG; i++) {
664: if (!strcmp(sys_signame[i], q + 3)) {
665: working->signal = i;
666: break;
667: }
668: }
669: if (i == NSIG)
1.60 millert 670: errx(1, "%s:%d: unknown signal: %s",
671: conf, lineno, q);
1.61 millert 672: } else if (working->flags & CE_MONITOR) {
673: *(parse = son(parse)) = '\0';
674: working->whom = strdup(q);
675: if (working->whom == NULL)
676: err(1, "strdup");
1.30 millert 677: } else
1.60 millert 678: errx(1, "%s:%d: unrecognized field: %s",
679: conf, lineno, q);
1.14 millert 680: }
1.51 millert 681: free(errline);
682:
1.61 millert 683: if ((working->flags & CE_MONITOR) && working->whom == NULL)
684: errx(1, "%s:%d: missing monitor notification field",
685: conf, lineno);
686:
1.51 millert 687: /* If there is an arcdir, set working->backdir. */
688: if (arcdir != NULL && working->logbase != NULL) {
689: if (*arcdir == '/') {
690: /* Fully qualified arcdir */
691: working->backdir = arcdir;
692: } else {
693: /* arcdir is relative to log's parent dir */
694: *(working->logbase - 1) = '\0';
695: if ((asprintf(&working->backdir, "%s/%s",
696: working->log, arcdir)) == -1)
697: err(1, "malloc");
698: *(working->logbase - 1) = '/';
699: }
700: /* Ignore arcdir if it doesn't exist. */
701: if (stat(working->backdir, &sb) != 0 ||
702: !S_ISDIR(sb.st_mode)) {
703: if (working->backdir != arcdir)
704: free(working->backdir);
705: working->backdir = NULL;
706: }
707: } else
708: working->backdir = NULL;
1.25 millert 709:
710: /* Make sure we can't oflow MAXPATHLEN */
1.51 millert 711: if (working->backdir != NULL) {
712: if (snprintf(line, sizeof(line), "%s/%s.%d%s",
713: working->backdir, working->logbase,
714: working->numlogs, COMPRESS_POSTFIX) >= MAXPATHLEN)
1.60 millert 715: errx(1, "%s:%d: pathname too long: %s",
716: conf, lineno, q);
1.51 millert 717: } else {
718: if (snprintf(line, sizeof(line), "%s.%d%s",
719: working->log, working->numlogs, COMPRESS_POSTFIX)
720: >= MAXPATHLEN)
1.60 millert 721: errx(1, "%s:%d: pathname too long: %s",
722: conf, lineno, working->log);
1.51 millert 723: }
1.35 deraadt 724: }
725: if (working)
726: working->next = NULL;
727: (void)fclose(f);
1.48 millert 728: return (first);
1.1 deraadt 729: }
730:
1.25 millert 731: char *
1.60 millert 732: missing_field(char *p, char *errline, int lineno)
1.1 deraadt 733: {
1.60 millert 734: if (p == NULL || *p == '\0') {
735: warnx("%s:%d: missing field", conf, lineno);
1.35 deraadt 736: fputs(errline, stderr);
737: exit(1);
738: }
1.48 millert 739: return (p);
1.1 deraadt 740: }
741:
1.25 millert 742: void
1.51 millert 743: dotrim(struct conf_entry *ent)
1.35 deraadt 744: {
745: char file1[MAXPATHLEN], file2[MAXPATHLEN];
1.57 millert 746: char oldlog[MAXPATHLEN], *suffix;
1.35 deraadt 747: int fd;
1.51 millert 748: int numdays = ent->numlogs;
749:
750: /* Is there a separate backup dir? */
751: if (ent->backdir != NULL)
752: snprintf(oldlog, sizeof(oldlog), "%s/%s", ent->backdir,
753: ent->logbase);
754: else
755: strlcpy(oldlog, ent->log, sizeof(oldlog));
1.1 deraadt 756:
1.35 deraadt 757: /* Remove oldest log (may not exist) */
1.51 millert 758: (void)snprintf(file1, sizeof(file1), "%s.%d", oldlog, numdays);
1.57 millert 759: (void)snprintf(file2, sizeof(file2), "%s.%d%s", oldlog, numdays,
1.35 deraadt 760: COMPRESS_POSTFIX);
761:
762: if (noaction) {
1.57 millert 763: printf("\trm -f %s %s\n", file1, file2);
1.35 deraadt 764: } else {
765: (void)unlink(file1);
1.57 millert 766: (void)unlink(file2);
1.35 deraadt 767: }
768:
769: /* Move down log files */
770: while (numdays--) {
1.57 millert 771: /*
1.65 millert 772: * If both the compressed archive and the non-compressed archive
1.70 millert 773: * exist, we decide which to rotate based on the CE_COMPACT flag
1.57 millert 774: */
1.51 millert 775: (void)snprintf(file1, sizeof(file1), "%s.%d", oldlog, numdays);
1.57 millert 776: suffix = lstat_log(file1, sizeof(file1), ent->flags);
777: if (suffix == NULL)
778: continue;
779: (void)snprintf(file2, sizeof(file2), "%s.%d%s", oldlog,
780: numdays + 1, suffix);
781:
1.35 deraadt 782: if (noaction) {
1.57 millert 783: printf("\tmv %s %s\n", file1, file2);
784: printf("\tchmod %o %s\n", ent->permissions, file2);
1.51 millert 785: if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1)
1.50 millert 786: printf("\tchown %u:%u %s\n",
1.57 millert 787: ent->uid, ent->gid, file2);
1.35 deraadt 788: } else {
1.57 millert 789: if (rename(file1, file2))
790: warn("can't mv %s to %s", file1, file2);
791: if (chmod(file2, ent->permissions))
792: warn("can't chmod %s", file2);
1.51 millert 793: if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1)
1.57 millert 794: if (chown(file2, ent->uid, ent->gid))
795: warn("can't chown %s", file2);
1.35 deraadt 796: }
797: }
1.51 millert 798: if (!noaction && !(ent->flags & CE_BINARY))
799: (void)log_trim(ent->log); /* Report the trimming to the old log */
1.1 deraadt 800:
1.51 millert 801: (void)snprintf(file2, sizeof(file2), "%s.XXXXXXXXXX", ent->log);
1.35 deraadt 802: if (noaction) {
1.50 millert 803: printf("\tmktemp %s\n", file2);
1.35 deraadt 804: } else {
805: if ((fd = mkstemp(file2)) < 0)
1.26 millert 806: err(1, "can't start '%s' log", file2);
1.51 millert 807: if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1)
808: if (fchown(fd, ent->uid, ent->gid))
1.70 millert 809: err(1, "can't chown '%s' log file", file2);
1.51 millert 810: if (fchmod(fd, ent->permissions))
1.26 millert 811: err(1, "can't chmod '%s' log file", file2);
1.35 deraadt 812: (void)close(fd);
1.26 millert 813: /* Add status message */
1.51 millert 814: if (!(ent->flags & CE_BINARY) && log_trim(file2))
1.26 millert 815: err(1, "can't add status message to log '%s'", file2);
1.35 deraadt 816: }
1.26 millert 817:
1.51 millert 818: if (ent->numlogs == 0) {
1.5 deraadt 819: if (noaction)
1.51 millert 820: printf("\trm %s\n", ent->log);
821: else if (unlink(ent->log))
822: warn("can't rm %s", ent->log);
1.5 deraadt 823: } else {
1.57 millert 824: (void)snprintf(file1, sizeof(file1), "%s.0", oldlog);
1.51 millert 825: if (noaction)
826: printf("\tmv %s to %s\n", ent->log, file1);
827: else if (rename(ent->log, file1))
1.59 millert 828: warn("can't mv %s to %s", ent->log, file1);
1.5 deraadt 829: }
830:
1.26 millert 831: /* Now move the new log file into place */
832: if (noaction)
1.51 millert 833: printf("\tmv %s to %s\n", file2, ent->log);
834: else if (rename(file2, ent->log))
1.59 millert 835: warn("can't mv %s to %s", file2, ent->log);
1.1 deraadt 836: }
837:
838: /* Log the fact that the logs were turned over */
1.25 millert 839: int
1.48 millert 840: log_trim(char *log)
1.1 deraadt 841: {
1.35 deraadt 842: FILE *f;
1.25 millert 843:
1.35 deraadt 844: if ((f = fopen(log, "a")) == NULL)
1.48 millert 845: return (-1);
1.44 mpech 846: (void)fprintf(f, "%s %s newsyslog[%ld]: logfile turned over\n",
847: daytime, hostname, (long)getpid());
1.35 deraadt 848: if (fclose(f) == EOF)
849: err(1, "log_trim: fclose");
1.48 millert 850: return (0);
1.1 deraadt 851: }
852:
1.16 millert 853: /* Fork off compress or gzip to compress the old log file */
1.25 millert 854: void
1.51 millert 855: compress_log(struct conf_entry *ent)
1.1 deraadt 856: {
1.48 millert 857: pid_t pid;
858: char *base, tmp[MAXPATHLEN];
1.51 millert 859:
860: if (ent->backdir != NULL)
861: snprintf(tmp, sizeof(tmp), "%s/%s.0", ent->backdir,
862: ent->logbase);
863: else
864: snprintf(tmp, sizeof(tmp), "%s.0", ent->log);
865:
1.27 millert 866: if ((base = strrchr(COMPRESS, '/')) == NULL)
867: base = COMPRESS;
868: else
869: base++;
870: if (noaction) {
1.51 millert 871: printf("%s %s\n", base, tmp);
1.27 millert 872: return;
873: }
1.35 deraadt 874: pid = fork();
875: if (pid < 0) {
1.11 downsj 876: err(1, "fork");
1.50 millert 877: } else if (pid == 0) {
1.37 deraadt 878: (void)execl(COMPRESS, base, "-f", tmp, (char *)NULL);
1.16 millert 879: warn(COMPRESS);
880: _exit(1);
1.35 deraadt 881: }
1.1 deraadt 882: }
883:
884: /* Return size in kilobytes of a file */
1.58 millert 885: off_t
1.48 millert 886: sizefile(char *file)
1.1 deraadt 887: {
1.35 deraadt 888: struct stat sb;
1.1 deraadt 889:
1.35 deraadt 890: if (stat(file, &sb) < 0)
1.48 millert 891: return (-1);
1.58 millert 892:
893: /* For sparse files, return the size based on number of blocks used. */
894: if (sb.st_size / DEV_BSIZE > sb.st_blocks)
895: return (sb.st_blocks * DEV_BSIZE);
896: else
897: return (sb.st_size);
1.1 deraadt 898: }
899:
1.25 millert 900: /* Return the age (in hours) of old log file (file.0), or -1 if none */
901: int
1.51 millert 902: age_old_log(struct conf_entry *ent)
1.1 deraadt 903: {
1.35 deraadt 904: struct stat sb;
1.57 millert 905: char file[MAXPATHLEN];
1.1 deraadt 906:
1.51 millert 907: if (ent->backdir != NULL)
1.57 millert 908: (void)snprintf(file, sizeof(file), "%s/%s.0", ent->backdir,
909: ent->logbase);
910: else
911: (void)snprintf(file, sizeof(file), "%s.0", ent->log);
912: if (ent->flags & CE_COMPACT) {
913: if (stat_suffix(file, sizeof(file), COMPRESS_POSTFIX, &sb,
914: stat) < 0 && stat(file, &sb) < 0)
915: return (-1);
916: } else {
917: if (stat(file, &sb) < 0 && stat_suffix(file, sizeof(file),
918: COMPRESS_POSTFIX, &sb, stat) < 0)
919: return (-1);
920: }
1.48 millert 921: return ((int)(timenow - sb.st_mtime + 1800) / 3600);
1.1 deraadt 922: }
923:
924: /* Skip Over Blanks */
1.25 millert 925: char *
1.48 millert 926: sob(char *p)
1.1 deraadt 927: {
1.35 deraadt 928: while (p && *p && isspace(*p))
929: p++;
1.48 millert 930: return (p);
1.1 deraadt 931: }
932:
933: /* Skip Over Non-Blanks */
1.25 millert 934: char *
1.48 millert 935: son(char *p)
1.1 deraadt 936: {
1.35 deraadt 937: while (p && *p && !isspace(*p))
938: p++;
1.48 millert 939: return (p);
1.1 deraadt 940: }
941:
942: /* Check if string is actually a number */
1.25 millert 943: int
1.48 millert 944: isnumberstr(char *string)
1.1 deraadt 945: {
1.35 deraadt 946: while (*string) {
947: if (!isdigit(*string++))
1.48 millert 948: return (0);
1.35 deraadt 949: }
1.48 millert 950: return (1);
1.10 downsj 951: }
952:
1.61 millert 953: int
954: domonitor(struct conf_entry *ent)
1.10 downsj 955: {
956: struct stat sb, tsb;
1.35 deraadt 957: char fname[MAXPATHLEN], *flog, *p, *rb = NULL;
1.10 downsj 958: FILE *fp;
959: off_t osize;
960: int rd;
961:
1.61 millert 962: if (stat(ent->log, &sb) < 0)
963: return (0);
964:
965: if (noaction) {
966: if (!verbose)
967: printf("%s: monitored\n", ent->log);
968: return (1);
969: }
1.10 downsj 970:
1.61 millert 971: flog = strdup(ent->log);
1.11 downsj 972: if (flog == NULL)
973: err(1, "strdup");
974:
1.10 downsj 975: for (p = flog; *p != '\0'; p++) {
976: if (*p == '/')
977: *p = '_';
978: }
1.48 millert 979: snprintf(fname, sizeof(fname), "%s/newsyslog.%s.size",
1.35 deraadt 980: STATS_DIR, flog);
1.10 downsj 981:
982: /* ..if it doesn't exist, simply record the current size. */
983: if ((sb.st_size == 0) || stat(fname, &tsb) < 0)
984: goto update;
985:
986: fp = fopen(fname, "r");
987: if (fp == NULL) {
1.34 millert 988: warn("%s", fname);
1.10 downsj 989: goto cleanup;
990: }
991: #ifdef QUAD_OFF_T
1.70 millert 992: if (fscanf(fp, "%lld\n", &osize) != 1) {
1.10 downsj 993: #else
994: if (fscanf(fp, "%ld\n", &osize) != 1) {
995: #endif /* QUAD_OFF_T */
996: fclose(fp);
997: goto update;
998: }
999:
1000: fclose(fp);
1001:
1002: /* If the file is smaller, mark the entire thing as changed. */
1003: if (sb.st_size < osize)
1004: osize = 0;
1005:
1006: /* Now see if current size is larger. */
1007: if (sb.st_size > osize) {
1008: rb = (char *) malloc(sb.st_size - osize);
1.11 downsj 1009: if (rb == NULL)
1010: err(1, "malloc");
1.10 downsj 1011:
1012: /* Open logfile, seek. */
1.61 millert 1013: fp = fopen(ent->log, "r");
1.10 downsj 1014: if (fp == NULL) {
1.61 millert 1015: warn("%s", ent->log);
1.10 downsj 1016: goto cleanup;
1017: }
1018: fseek(fp, osize, SEEK_SET);
1019: rd = fread(rb, 1, sb.st_size - osize, fp);
1020: if (rd < 1) {
1.11 downsj 1021: warn("fread");
1.10 downsj 1022: fclose(fp);
1023: goto cleanup;
1024: }
1025:
1026: /* Send message. */
1027: fclose(fp);
1028:
1029: fp = openmail();
1030: if (fp == NULL) {
1.11 downsj 1031: warn("openmail");
1.10 downsj 1032: goto cleanup;
1033: }
1034: fprintf(fp, "To: %s\nSubject: LOGFILE NOTIFICATION: %s\n\n\n",
1.61 millert 1035: ent->whom, ent->log);
1.10 downsj 1036: fwrite(rb, 1, rd, fp);
1037: fputs("\n\n", fp);
1038:
1.48 millert 1039: pclose(fp);
1.10 downsj 1040: }
1041: update:
1042: /* Reopen for writing and update file. */
1043: fp = fopen(fname, "w");
1044: if (fp == NULL) {
1.34 millert 1045: warn("%s", fname);
1.10 downsj 1046: goto cleanup;
1047: }
1048: #ifdef QUAD_OFF_T
1.70 millert 1049: fprintf(fp, "%lld\n", (long long)sb.st_size);
1.10 downsj 1050: #else
1.70 millert 1051: fprintf(fp, "%ld\n", (long)sb.st_size);
1.10 downsj 1052: #endif /* QUAD_OFF_T */
1053: fclose(fp);
1054:
1055: cleanup:
1056: free(flog);
1057: if (rb != NULL)
1058: free(rb);
1.61 millert 1059: return (1);
1.10 downsj 1060: }
1061:
1.25 millert 1062: FILE *
1.48 millert 1063: openmail(void)
1.10 downsj 1064: {
1.48 millert 1065: FILE *ret;
1.35 deraadt 1066: char *cmdbuf = NULL;
1.10 downsj 1067:
1.64 pvalchev 1068: if (asprintf(&cmdbuf, "%s -t", SENDMAIL) != -1) {
1.35 deraadt 1069: ret = popen(cmdbuf, "w");
1070: free(cmdbuf);
1071: return (ret);
1072: }
1073: return (NULL);
1.10 downsj 1074: }
1075:
1.25 millert 1076: void
1.48 millert 1077: child_killer(int signo)
1.16 millert 1078: {
1.38 deraadt 1079: int save_errno = errno;
1.16 millert 1080: int status;
1081:
1082: while (waitpid(-1, &status, WNOHANG) > 0)
1083: ;
1.38 deraadt 1084: errno = save_errno;
1.57 millert 1085: }
1086:
1087: int
1088: stat_suffix(char *file, size_t size, char *suffix, struct stat *sp, int (*func)())
1089: {
1090: size_t n;
1091:
1092: n = strlcat(file, suffix, size);
1093: if (n < size && func(file, sp) == 0)
1094: return (0);
1095: file[n - strlen(suffix)] = '\0';
1096: return (-1);
1097: }
1098:
1099: /*
1.65 millert 1100: * lstat() a log, possibly appending a suffix; order is based on flags.
1.57 millert 1101: * Returns the suffix appended (may be empty string) or NULL if no file.
1102: */
1103: char *
1104: lstat_log(char *file, size_t size, int flags)
1105: {
1106: struct stat sb;
1107:
1108: if (flags & CE_COMPACT) {
1109: if (stat_suffix(file, size, COMPRESS_POSTFIX, &sb, lstat) == 0)
1110: return (COMPRESS_POSTFIX);
1111: if (lstat(file, &sb) == 0)
1112: return ("");
1113: } else {
1114: if (lstat(file, &sb) == 0)
1115: return ("");
1116: if (stat_suffix(file, size, COMPRESS_POSTFIX, &sb, lstat) == 0)
1117: return (COMPRESS_POSTFIX);
1118:
1119: }
1120: return (NULL);
1.63 millert 1121: }
1122:
1123: /*
1124: * Parse a limited subset of ISO 8601. The specific format is as follows:
1125: *
1126: * [CC[YY[MM[DD]]]][THH[MM[SS]]] (where `T' is the literal letter)
1127: *
1128: * We don't accept a timezone specification; missing fields (including timezone)
1129: * are defaulted to the current date but time zero.
1130: */
1131: time_t
1132: parse8601(char *s)
1133: {
1134: char *t;
1135: struct tm tm, *tmp;
1.70 millert 1136: long l;
1.63 millert 1137:
1138: tmp = localtime(&timenow);
1139: tm = *tmp;
1140:
1141: tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
1142:
1.70 millert 1143: l = strtol(s, &t, 10);
1144: if (l < 0 || l >= INT_MAX || (*t != '\0' && *t != 'T'))
1.63 millert 1145: return (-1);
1146:
1147: /*
1148: * Now t points either to the end of the string (if no time was
1149: * provided) or to the letter `T' which separates date and time in
1150: * ISO 8601. The pointer arithmetic is the same for either case.
1151: */
1152: switch (t - s) {
1153: case 8:
1.70 millert 1154: tm.tm_year = ((l / 1000000) - 19) * 100;
1155: l = l % 1000000;
1.63 millert 1156: case 6:
1157: tm.tm_year -= tm.tm_year % 100;
1.70 millert 1158: tm.tm_year += l / 10000;
1159: l = l % 10000;
1.63 millert 1160: case 4:
1.70 millert 1161: tm.tm_mon = (l / 100) - 1;
1162: l = l % 100;
1.63 millert 1163: case 2:
1.70 millert 1164: tm.tm_mday = l;
1.63 millert 1165: case 0:
1166: break;
1167: default:
1168: return (-1);
1169: }
1170:
1171: /* sanity check */
1172: if (tm.tm_year < 70 || tm.tm_mon < 0 || tm.tm_mon > 12
1173: || tm.tm_mday < 1 || tm.tm_mday > 31)
1174: return (-1);
1175:
1176: if (*t != '\0') {
1177: s = ++t;
1.70 millert 1178: l = strtol(s, &t, 10);
1179: if (l < 0 || l >= INT_MAX || (*t != '\0' && !isspace(*t)))
1.63 millert 1180: return (-1);
1181:
1182: switch (t - s) {
1183: case 6:
1.70 millert 1184: tm.tm_sec = l % 100;
1185: l /= 100;
1.63 millert 1186: case 4:
1.70 millert 1187: tm.tm_min = l % 100;
1188: l /= 100;
1.63 millert 1189: case 2:
1.70 millert 1190: tm.tm_hour = l;
1.63 millert 1191: case 0:
1192: break;
1193: default:
1194: return (-1);
1195: }
1196:
1197: /* sanity check */
1198: if (tm.tm_sec < 0 || tm.tm_sec > 60 || tm.tm_min < 0
1199: || tm.tm_min > 59 || tm.tm_hour < 0 || tm.tm_hour > 23)
1200: return (-1);
1201: }
1202: return (mktime(&tm));
1203: }
1204:
1205: /*-
1206: * Parse a cyclic time specification, the format is as follows:
1207: *
1208: * [Dhh] or [Wd[Dhh]] or [Mdd[Dhh]]
1209: *
1210: * to rotate a logfile cyclic at
1211: *
1212: * - every day (D) within a specific hour (hh) (hh = 0...23)
1213: * - once a week (W) at a specific day (d) OR (d = 0..6, 0 = Sunday)
1214: * - once a month (M) at a specific day (d) (d = 1..31,l|L)
1215: *
1216: * We don't accept a timezone specification; missing fields
1217: * are defaulted to the current date but time zero.
1218: */
1219: time_t
1220: parseDWM(char *s)
1221: {
1222: char *t;
1223: struct tm tm, *tmp;
1224: long l;
1225: int nd;
1226: static int mtab[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
1227: int WMseen = 0;
1228: int Dseen = 0;
1229:
1230: tmp = localtime(&timenow);
1231: tm = *tmp;
1232:
1233: /* set no. of days per month */
1234:
1235: nd = mtab[tm.tm_mon];
1236:
1237: if (tm.tm_mon == 1) {
1238: if (((tm.tm_year + 1900) % 4 == 0) &&
1239: ((tm.tm_year + 1900) % 100 != 0) &&
1240: ((tm.tm_year + 1900) % 400 == 0)) {
1241: nd++; /* leap year, 29 days in february */
1242: }
1243: }
1244: tm.tm_hour = tm.tm_min = tm.tm_sec = 0;
1245:
1246: for (;;) {
1247: switch (*s) {
1248: case 'D':
1249: if (Dseen)
1250: return (-1);
1251: Dseen++;
1252: s++;
1253: l = strtol(s, &t, 10);
1254: if (l < 0 || l > 23)
1255: return (-1);
1256: tm.tm_hour = l;
1257: break;
1258:
1259: case 'W':
1260: if (WMseen)
1261: return (-1);
1262: WMseen++;
1263: s++;
1264: l = strtol(s, &t, 10);
1265: if (l < 0 || l > 6)
1266: return (-1);
1267: if (l != tm.tm_wday) {
1268: int save;
1269:
1270: if (l < tm.tm_wday) {
1271: save = 6 - tm.tm_wday;
1272: save += (l + 1);
1273: } else {
1274: save = l - tm.tm_wday;
1275: }
1276:
1277: tm.tm_mday += save;
1278:
1279: if (tm.tm_mday > nd) {
1280: tm.tm_mon++;
1281: tm.tm_mday = tm.tm_mday - nd;
1282: }
1283: }
1284: break;
1285:
1286: case 'M':
1287: if (WMseen)
1288: return (-1);
1289: WMseen++;
1290: s++;
1291: if (tolower(*s) == 'l') {
1292: tm.tm_mday = nd;
1293: s++;
1294: t = s;
1295: } else {
1296: l = strtol(s, &t, 10);
1297: if (l < 1 || l > 31)
1298: return (-1);
1299:
1300: if (l > nd)
1301: return (-1);
1302: tm.tm_mday = l;
1303: }
1304: break;
1305:
1306: default:
1307: return (-1);
1308: break;
1309: }
1310:
1311: if (*t == '\0' || isspace(*t))
1312: break;
1313: else
1314: s = t;
1315: }
1316: return (mktime(&tm));
1.1 deraadt 1317: }
![[BACK]](/icons/back.gif){kind=icon}
Return to newsyslog.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / newsyslog